Improvement in mica lamp-chimneys



L. VAN ORDER.

Mica LampChimney. v No. 34,917. Patented Aprii 8, 1862.

UNITED STATES PATENT OFFICE.

LINN VAN ORDER, OF I'IHACA, NEW YORK.

IMPROVEMENT IN MICA LAMP-CHIMN EYS.

Specification forming part of Letters Patent No. 34,917, dated April 8,1862.

F0 all whom it may concern:

Be it known that I, LINN VAN ORDER, of the town of Ithaca, in the countyof Tompkins and State of New York, have invented an Improvement in MicaLamp-Chimneys for Burning Hydrocarbon Oils Distilled from Petroleum andCoal; and I do hereby declare that the following is a full and exactdescription thereof, reference being had to the accompan yin g drawings,and to the letters of reference marked thereon, in which Figure 1 is aperspective view of my improved chimney, and Fig. 2 is a part thereof.

In Fig. 1 A is the metallic base of the chimney grooved on its upperedge for holding, as part of the frame, the edge of the mica. B B arethe two side parts of the metallic frame, also grooved to allow the micato he slid in and out, and be firmly held, and of which one, two, ormore may be used, as desired. 0 is the mica held in the grooves on allsides. D is the metallic cap of the chimney, made of any desirablelength and shape, but fitting over another internal metallic ring at itsbase, and between it and the said ring holding the mica at its upperportion. By closeness of coadaptation or other suitable mechanical meansthe cap D is retained in its place, While it allows of instant removalat pleasure, for the purpose of allowing the mica to be removed from thegrooved frame-work in order to be cleaned or the renewal of the micawhen soiled, blackened, or cracked or broken.

In Fig. 2 the parts just described are more clearly seen. At A w is asectional view, showing the cap, mica, and upper ring in their mutualrelations. At E isa side View of the side frame, grooved on each edge at13 and B, with the chimney-baseA and the top inner ring H attachedimmovably to the side parts of the frame E, and a little removed is thecap D.

The practical arrangement of the parts described admits of muchvariation, but the main design of my invention is clear to all skilledin the art to which it appertains, and is so to construct my chimneythat the mica can he slid in and out at pleasure without any alterationof the fixed parts of the chimney, for the purpose of cleaning the mica,repairing the same, or renewing the sheet of mica when worn out, smoked,or rendered useless by cracks or other accidents. more permanentpractical form with flexible side parts of the frame.

I claim- The so constructing the frame-work of the chimney as to inclosethe edges of the mica on all sides, and making one end adjustable, so asto allow the ready and easy removal of the mica, for the purpose ofcleaning the same or renewing it when worn out, soiled, or otherwiseinjured.

LINN VAN ORDER.

\Vitnesses:

JOHN V. WILsoN, SAMUEL J. PARKER.

At I a; is the

